[−][src]Enum razor_fol::syntax::Term
Represents a first-order term and consists of variables, constants and function applications.
Variants
Is a variable term, wrapping a variable symbol.
Fields of Var
variable: V
Is a constant term, wrapping a constant symbol.
Fields of Const
constant: C
Is a composite term, made by applying a function
on a list of terms
.
Methods
impl Term
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pub fn free_vars(&self) -> Vec<&V>
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Returns a list of all free variable symbols in the term.
Note: In the list of free variables, each variable symbol appears only once even if it is present at multiple positions of the receiver term.
Example:
// `x_sym` and `y_sym` are variable symbols: let x_sym = V::from("x"); let y_sym = V::from("y"); // `c_sym` is a constant symbol: let c_sym = C::from("c"); // `x` and `y` are variable terms: let x = Term::from(x_sym.clone()); let y = Term::from(y_sym.clone()); // `c` is a constant term: let c = Term::from(c_sym.clone()); // `f` and `g` are function let f = F::from("f"); let g = F::from("g"); // f(x, g(y, c, x)): let t = f.app2(x.clone(), g.app3(y, c, x.clone())); // comparing the two (unordered) lists: assert_eq!(vec![&x_sym, &y_sym].iter().sorted(), t.free_vars().iter().sorted())
pub fn equals(self, term: Term) -> Formula
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Returns an equation (formula) between the receiver and term
.
Trait Implementations
impl Clone for Term
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impl Debug for Term
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impl Display for Term
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impl Eq for Term
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impl FApp for Term
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impl From<C> for Term
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impl From<V> for Term
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impl Hash for Term
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fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
impl Ord for Term
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fn cmp(&self, other: &Term) -> Ordering
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fn max(self, other: Self) -> Self
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fn min(self, other: Self) -> Self
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fn clamp(self, min: Self, max: Self) -> Self
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impl PartialEq<Term> for Term
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impl PartialOrd<Term> for Term
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fn partial_cmp(&self, other: &Term) -> Option<Ordering>
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fn lt(&self, other: &Term) -> bool
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fn le(&self, other: &Term) -> bool
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fn gt(&self, other: &Term) -> bool
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fn ge(&self, other: &Term) -> bool
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impl StructuralEq for Term
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impl StructuralPartialEq for Term
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impl TermBased for Term
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fn transform(&self, f: &impl Fn(&Term) -> Term) -> Self
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fn rename_vars(&self, renaming: &impl VariableRenaming) -> Self
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fn substitute(&self, sub: &impl Substitution) -> Self
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Auto Trait Implementations
impl RefUnwindSafe for Term
impl Send for Term
impl Sync for Term
impl Unpin for Term
impl UnwindSafe for Term
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,